Why does my blender 2.8 not recognize the gpu?
The Radeon R5 M430 has the GCN first generation micro-architecture and is therefore not fulfilling the minimum requirements for GPU rendering.


  Modell: Radeon R5 M430[158](Exo Pro)
  
  Launch: 15 May 2016
  
  Architecture: GCN 1st gen (28 nm)


Requirements for GPU rendering from the manual:


  AMD
  
  OpenCL is supported for GPU rendering with AMD graphics cards. Blender supports graphics cards with GCN generation 2 and above. To make sure your GPU is supported, see the list of GCN generations with the GCN generation and supported graphics cards.
  
  AMD OpenCL GPU rendering is supported on Windows and Linux, but not on
  macOS.